RevEng, I have download and printed out your documentation and its very good. Thanks again for all the hard work that you put into this. I truly feel that we have not come even close to maxing out the potential of batari Basic programming for the 2600!
Sound is definitely a possibility. You call the titlescreen drawing routine with a gosub, but otherwise it acts the same as a bB drawscreen command, so you can control sound just as you would in a game.
Agreed on bB programming having even better days ahead of it. When batari gets around to coding a DPC+ kernel I'm positive you're going to see a lot of the compromises in the present bB kernels vanish. (blank lines, losing a missile for colors, etc)